CAJ | 학술논문

为了了解目前世界上仅有的3个常绿杨树无性系(A-65/27、A-65/31及A-61/186)在亚热带的生长适应性,对它们苗期生长状况进行了研究.结果表明,3个无性系的扦插成活率达到90%以上.高度和地径年生长动态存在明显的速生期,高度年速生期主要在6-9月份,地径速生期集中在8-10月份.A-61/186的叶面积是三者中最大的,但其叶面积从生长初期到生长盛期的增加幅度最小,4月份A-65/27叶面积大于A-65/31,9月份A-65/31叶面积大于A-65/27,3个无性系生长过程中叶面积的增大主要是叶宽的增加.A-61/186的总生物量最大,苗木生物量1年生A-65/27大于A-65/31,2年生A-65/31大于A-65/27,根、茎、叶各部分生物量占总的比例大小趋势是一致的,均为茎>根>叶.3个无性系之间高度、地径、叶面积生长量及生物量均不存在显著差异.
위료료해목전세계상부유적3개상록양수무성계(A-65/27、A-65/31급A-61/186)재아열대적생장괄응성,대타문묘기생장상황진행료연구.결과표명,3개무성계적천삽성활솔체도90%이상.고도화지경년생장동태존재명현적속생기,고도년속생기주요재6-9월빈,지경속생기집중재8-10월빈.A-61/186적협면적시삼자중최대적,단기협면적종생장초기도생장성기적증가폭도최소,4월빈A-65/27협면적대우A-65/31,9월빈A-65/31협면적대우A-65/27,3개무성계생장과정중협면적적증대주요시협관적증가.A-61/186적총생물량최대,묘목생물량1년생A-65/27대우A-65/31,2년생A-65/31대우A-65/27,근、경、협각부분생물량점총적비례대소추세시일치적,균위경>근>협.3개무성계지간고도、지경、협면적생장량급생물량균불존재현저차이.
There are only three evergreen poplar clones now, including A-65/27, A-65/31 and A-61/186. Easy cutting propagation, higher afforestation survival rate and fast-growing evergreen poplar clones with high yield and excellent wood quality are their common features. Tree species resources of south timber forests would be abounded significantly through extensively planting these poplar clones. The experiments of cutting and transplanting were made in order to understand the growth characteristics of evergreen poplar clones. The results showed that the cutting survival rates were higher than 90%. There was a clear fast-growing period for the growth of height and ground diameter in a year. High growth rate of height growth was mainly from June to September, and ground diameter growth mainly in August, September and October. The leaf area of A-61/186 was the largest in the three clones, but its growth range was the lowest. The leaf area of A-65/27 was bigger than A-65/31 in April but lower in September. And leaf area was mainly increased through growth of leaf width. The biomass of A-61/186 was the largest in the three clones also,and that of A-65/27 was larger than A-65/31 for one-year-old plant and lower for two-year-old plant. Biomass structure of three clones were all stem>root>leaf for one-year-old and two-year-old seedlings. There were no significant differences among three clones in height, ground diameter, leaf area and biomass.